I have a 1986 F250 diesel and accidentally crossed wires installing a new battery. I fried the starter solenoid. After replacing it I still had no power to anything. I have tested everything from the battery to the fuse box, and everything seems to be getting current. Why don't I have any power anywhere? Not even a dome light.

 

You have power in the fuse box? Do the headlights work? On the solenoid there are a bunch of smaller wires with square things made into the wires. These are fusible links, and they usually burn out when the polarity is crossed up.

 

^^^ I was going to say ck fuse links .